OVERVIEW: X-Band Tracking Radars (XBR) are high-resolution fire-control and discrimination radars used in ballistic missile defense (BMD) systems for tracking, classification, and engagement support of missile threats.

GENERAL DESCRIPTION: X-Band Tracking Radars are specialized ground- or sea-based sensors designed to detect, track, and discriminate ballistic missile threats—particularly in midcourse and terminal phases. Operating in high-frequency X-Band (IEEE) or I-Band (NATO), these radars offer fine-resolution tracking and target discrimination, essential for distinguishing warheads from decoys. XBRs are often phased-array systems capable of high-speed beam steering, precision cueing of interceptors, and integration with command-and-control networks. They are typically deployed as part of national or theater-level BMD architectures, including shipboard Aegis systems, ground-based interceptors (GBI), or forward-deployed sensors.

ROLE SUMMARY:
Category: Ballistic Missile Defense (BMD) fire-control / tracking radar
Primary Use: Tracking and discrimination of ballistic missile threats
Function: High-resolution engagement support, interceptor cueing
Platform: Fixed land installations (e.g., THAAD, GMD), naval Aegis ships, or transportable radar systems
Export: Used by the United States and select allies (Japan, South Korea, Israel, etc.)
Integration: Interfaced with early warning radars, BMC2 systems, and exo-atmospheric interceptors

Type: Active or passive electronically scanned array (AESA/PESA)

See Specific information under [Sensors/EW] section.

SOURCE:
Raytheon Missile Defense Sensor Data
https://en.wikipedia.org/wiki/AN/TPY-2
https://en.wikipedia.org/wiki/Sea-based_X-band_Radar